Year	Percent change
1981	-4
1982	4.1
1983	2
1984	4.9
1985	5.8
1986	-2.1
1987	-15.4
1988	3.5
1989	15.431
1990	5.147
1991	6.124
1992	-3.087
1993	3.947
1994	3.713
1995	4.974
1996	3.625
1997	5.738
1998	3.478
1999	-8.943
2000	-1.883
2001	2.15
2002	0.187
2003	1.701
2004	1.12
2005	-0.786
2006	-1.908
2007	6.333
2008	1.733
2009	-2.279
2010	6.27
2011	7.092
2012	5.251
2013	5.517
2014	4.435
2015	3.879
2016	2.091
2017	0.499
2018	1.221
2019	3.145
2020	3.864
2021	4.076
2022	4.482
2023	4.463
2024	4.354